Technical Support wrote:
Bluetooth would not cause a power cycling of the CC. It is unlikely, if not impossible, for bluetooth to trigger a light directly.
Generally, this is caused by a corrupt SD card, and removal would correct the problem, though not the case here.
When you say the battery contacts are OK, does that mean they are both soldered solidly to the board as well as making solid contact with the batteries (i.e. the batteries are not loose in the compartment)?
Also, have you tried another (3rd) set of batteries, or tested the new batteries? It is entirely possible for even new batteries to have a dead/low cell. Also make sure you are using alkalines or lithiums. Rechargables are not recommended due to the lower nominal voltage (Low Self Discharge type rechargables have worked OK, but be aware they still have a lower nominal voltage and could still pose a problem).
And while trouble shooting, I would leave the card out.
I have tried many new sets of alkaline batteries with the same results.
I have checked the battery contacts to make sure they are making contact with the battery and did not notice the contacts being loose from the board.
I mentioned the speaker as it was the only new device in the studio.